Gas-burner for eurnaces



E. W. VEST.

GAS BURNER FOR FURNACES, STOVES, AND RANGES.

APPLICATION FILED APR-8.1918.

1,325,456. Patented Dec. 16,1919.

EUGENE W. VEST, ST. LOUIS, MISSOURI.

GAS-BURNER FOR FURNACES, STOVES, AND RANGES;

Application filed April 8, 1918. Serial No. 227,244.

To all whom it may concern:

Be it known that I, EUGENE W. VES a citizen of theUnited'States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements 1n Gas-Burners for Furnaces, H Stoves, and

.Ranges, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to an improvedgasburner for furnaces, stoves, and ranges, and it consists in the novel construction here1nafter fully described, and as partlcularly pointed out in the claims found at'the end of this specification.

The object of my invention is to provide improved devices for utilizing in a very efficient and economical manner the gas that passes into the burner; and to improve upon the devices for controlling the primary and secondary air that are shown and described in a companion application, entitled Gas-burning system for furnaces, heat ngstoves, ranges, &c., filed by me on April 8, 1918, the same date that the present applica-' tion was filed, Serial No. 227 ,245; whereby a mamixum of heat will be produced with the expenditure of a minimum quantity of as. g In the drawings,

Figure l is a sectional side-elevation of my improved burner applied to the fire-box and ash-pit of-a common furnace, stove, or range.

Fig. 2 is a detail front elevation of one of the handles of the gas-valve stem, and 1ts immediate connections, detached:

Fig. 3 is a detail view in perspective of the combustion-chambers of three burners, arranged tandem, as they are in the firebox of a range, and

Fig. 4 is a plan view of the arrangement of refractory parts 'used in one form of fireboxes.

The numeral 1 designates the outer wall of the range, furnace, or stove in which my invention is tobe used, and 2 designates the bottom ---of the ash-box or ash-pit of either of such apparatus, or it may be the ash-box or ash-pit of a hot-water heater, or of a hot-water heating-boiler, or the base of a steam-boiler furnace.

The fire-box is, in the present instance, divided up into a pluralityofsmall combustion-chambers (or spaces) 3, which are made Specification of Letters Patent.

Patented Dec. 16, 1919.

in rectangular form by suitable horizontal base-sections 4 made of iron or-other proper 1 material, and placed end-to-end with their abutting ends or edges connected by overlapping or rabbeted parts to form a tight joint, as designated by the numeral 5, and supported by brackets or angle-bars 6 located in said ash-box at suitable points; to])- sections ,7 of highly refractory material (such as fire-clay) placed end-to-end with their abutting ends connected by over-lapping parts and supported a proper distance i above the said base-sections by blocks of re- .fractory material 8, which not only support said top-sections ut act as partitions vbetween the adjacent combustion-chambers 3, the said top-sections being seated in recesses 9 formed in the upper edges of the said supporting and partitioning blocks 8, so that the upper surface of said top-sections will lie flush with the upper edges v0f the said blocks, which are set on edge, and stand in a vertical position; the opposite sides of said combustion-chambers being closed by side-sections 10, the abutting ends or edges of which are united by rabbeted or overlapping joints, as with the previously mentioned sections.

The said side-sections 10 are of suflicient height for the purpose mentioned, and in some cases they may extend past the end blocks 8 a sufiicient distance to receive a number of filling blocks 11 between them at one or both ends of the fire-box, and an endsaid side-sections 10, to form exit-passages for the flame and hot gases from said combustion-chambers to. a fire-chamber 14 located above the latter, and in which firechamberl l there is placed (in the, present instance) a body of what are known inthe art. as fire-clay'biscuits 15, which rest upon and are supported by the said top-sections 7. The numeral 16 designatesthe top of the "range, orthe top of said fire-chamber 14,

no matter what form of apparatusmy invention may be located 1n, whether it be in a range, furnace or stove, there being a suitable space left abovethe said biscuits 15 (or' other similar small iecesof hard refractory material) fort e free passage of the hot expanded gases to some other por tion of the range after they have passed through the interstices of said biscuits on their way to the smoke-pipe or other destination.

A vertical secondary-air. pipe 17 surrounds the vertical discharge-pipe 18 of the'mixingtube 19 of each combustion-chamber, said discharge-pipes 17 and 18 being united in.

a single casting, and the open upper ends of said discharge-pipes project upwardly through an aperture 20 formed in the basesection 4 of said chamber, so that the mixture of gas and air from said discharge-pipe 18, as well as the air from the said dischargepipe 17, will be discharged upwardly into said combustion-chamber, and the flame will impinge upon the underside of the said topsections 7 of the burner, and then pass up-f. ward into and through the body of his cuits l5, and thence to some other part of the range or other ap aratus; the said gas and air being through 1y commingled an burned in a most economical manner, my

im roved construction (as shown and described) enabling'me to heat the said bisthe lower portion of said casting, and the' cuits to from 1000 to 1500 Fahrenheit,

and to pass through the interstices of such highly heated refractory material necessary quantities of secondary air that is not used in completing the combustion, and to discharge such air against the top (or carry it to other parts) ofthe ran e or other apparatus, there to part with its heat in useful work.

The burner casting, of which said dis charge-pipes l7 and 18 form a part, is supported by suitable means, such as a pedestal 21, the lower end of which rests upon the bottom 2 of the ash-pit, while its upper end carries a common T 22- which is threaded into a tubular boss 23 formed integral with interior of which boss communicates with the interior of a dirt-receptacle 24: in com-' munication with the lower end of said central discharge-pipe 18, whereby the dirt and dust which accumulates in said dirt-receptacle may be removed by inserting a small scraper through the clean-out pipe 25 con-- essence mixing-tube by means of a common coupling, as 28, to conduct the mixture of gas and air to the said discharge-pipe 18.

The said gas-valve casting has mounted lIlt it the usual gas-valve stem 29 having a handle 30 fixed upon its outer end, to control the entrance of gas-to said mixing-tube 19,

the gas reaching the. interior of said casting by way of a pipe 31, common union 32, an common gas-cock 33 connected to the service pipe 3%. l

The air-throat 35 of the said gas-valve casting has its interior in communication 'with the interior of the said horizontal portion 27, which is of course in communication 'with the interior of the said mixing-tube 19.

Simultaneous regulation of the entrance of air'to said air-throat-35 and the passage of gas to the said mixing-tube, is secured 'by A a slide-valve 36 having an aperture 37 which registers with the entrance to said throat when said-throat is opened by said valve, and is mounted to slide in suitable guides38 across the entrance to said throat, and a suitable'connection between said gas-valve stem 29 and the said valve, which will cause said stem and valve I to move in unison; whereby the turning up or down of the gas will at the same time regulate the air, to produce the Bunsen flame required for the most efiicient and economical operation of the burner.

As herein shown, and as more specifically shown and described in my companion applications, previously mentioned,- I have provided a cam, as 39, which is fixed upon the gas-valve stem 29' at a point between the 1 stufing-box gland 40' and "the stem'handle 30, the projecting lip 41 of-said cam being embraced'by a -U-shaped bearing 42 at the f lower end of a vertical shank 43 at the loweredge of said valve 36-; whereby when the said stem is rocked or partially rotated the cam'will cause a corresponding movement of said valve, and more or less close or'open the entrance to the said air-throat.

Common lighting means are provided, in v the formpf lighter-tubes 44; having the usual lighter-tips 45, some of said tips having a lateral tip 46 for communicating the flame to the next adjacent tip of the series, for lightin the burners in theusual manner,

the sai lighter-tubes being connected to said service pipe 34 and provlded with a common shut-off cock 4 7 for controlling the supply of gas to sald lighter tips.

At the lower end of the burner casting is an integral valve or damper chamber 48, the entrance of which has mounted in or over it a common damper t9, which is provided with a crank or lever 50.

Said damper orvalve lever 50 is connected toLthe handle or lever 51 of the said service-pipe gas-cock 33 by a horizontal rod 52, one end of which is pivoted at 53 to the said air-entrance damper-lever 50 While its opposite end is adjustably and pivotally connected tothe said gas-cock lever 51 by the following means in the present case:

The free end of the stem 51 of said gascock 33 is squared or otherwise made noncylindrical, and the said gas-cock lever 51 is formed with 'a corresponding socket or bearing 55, which is fixed upon thesaid stem 54, and the latter is provided with a series 7 of perforations 56, some of which are located ,foration 56 of the said nearer the inner end of said lever 51 than are the other perforations.

A sleeve 57 having a handle 58 by which it may be grasped and moved, and having a perforated ear 59 is slidably mounted upon the said gas-cock lever 51, and the outer end of the said horizontal rod 52 is pivotally connected at 60 to the said perforated ear of said lever.

The said slidable sleeve '57 is provided with perforations, as 61, in its opposite sides Which register with the desired pergas-cock lever 51, in adjusting the sleeve upon said lever, the saidregistering perforations being occupied by a common pin 62,'which is secured to the said lever by means of a chain 63 and screws or other fastening-means (H, to provide against the accidental misplacement of the said pin.

When it is desired to adjust the said sleeve 57 upon the said gas-cock lever 51, to impart a greater or less movement to the said damper 49, it is only necessary to slide the sleeve to the desired position and secure it there by inserting said. pin 62 in the proper registering perforations of the sleeve and the lever,

It willthus be seen that I have provided a means for mechanically regulating the supply of secondary air to the burner, simultaneously With the regulation of the gassupply to said burner; whereby the secondary-air entrance chamber 48 is throttled against the passage of too much cold air at all times, to correspond to the amount of gas being used, and a very high' efiioiency and economy are accomplished, inasmuch as much unnecessary cold air is excluded from the firebox, and the latter is retained at all times at the highest temperature consistent with the quantity of gas being burned.

The movement of the said gas-cock 51 toward the right-hand should open the gas cock 33 and simultaneously open a corresponding distance the said cold air damper 19 of the burner casting, while a reverse movement of such connected parts will have the opposite effect on both the gas supply and the air supply, with the resultant econ orny and efliciency, as before recited.

The operation of the other parts of my invent-ion will be readily apparent from the above description, and need not be further elucidated.

I claim the following:

1. A fire-box divided into a plurality of small combustion-chambers by horizontal base-sections, top-sections, vertical partitions, and side-sections; said sections'being united to like sections by overlapping joints, and said base-sections having an aperture through which the gas and air enters, and

all of said sections being made of highly refractory material except said base sections.

2. A fire-box divided into a series of small combustion-chambers of rectangular form having their top and sides made of refractory material, and having an aperture in their bases; a burner-casting arranged to discharge a mixture of gas and air through said aperture of said bases; a fire-chamber above the series of combustion-chambers, there being passages for the gases and flame between said combustion-chambers and the said fire-chamber; and a body of refractory material in small pieces located in said firechamber. I

3. In a gas-burner for furnaces, stoves and ranges, a casting having concentric discharge-pipes for the air and gaseous fuel; a mixing-tube; a gas-valve for regulating the supply of gas to said mixing-tube; a service-pipe gas-cock having a rockable stem and handle; an air entrance at the base of presence of two I 

